________ deposits are found in streams where running water has mechanically concentrated heavy sediment such as gold.

A. Placer
B. Pebble
C. Lag
D. Granular
E. Agglomerated


Answer: A

Environmental & Atmospheric Sciences

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The prevailing model for the formation of greenstone beds in the Archean is ____

A)igneous intrusion into a sandstone bed B)the closing of a back-arc basin C)a Wilson cycle D)mid-continental rifting E)ultramafic lava flows

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Coulomb's law has the same form as

A. Newton's second law. B. Newton's law of gravity. C. Ohm's law. D. none of the above

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Photosynthesis requires both carbon dioxide and water, but could not occur without the input of____________ ______________

Fill in the blanks with correct word

Environmental & Atmospheric Sciences

Most of Earth's fresh water is in

A) ice caps, glaciers, and groundwater. B) groundwater and rivers. C) lakes and swamps. D) rivers and streams. E) oceans.

Environmental & Atmospheric Sciences